A range of heart rates used to describe or guide cardiovascular exercise intensity.
Why Heart-rate zone matters
Zones can help organise easy and hard cardio, but watches and formula-based maximum heart rates remain estimates.
A practical example
Maintaining a conversational pace during an easy aerobic session rather than chasing a precise watch number.
Common mistake
Treating an estimated zone boundary as a medical measurement or ignoring symptoms.
Keep the context in mind.
Training and nutrition terms describe general principles. The right exercise, intensity or food target still depends on your experience, health, goals and schedule.
Personalised coaching
Apply the principle to your own training.
A definition is useful, but your programme still needs to match your experience, schedule, recovery and goals.
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